Truck-bolster.



PATBNTED JULY 28, '1903.

o. VANDBRBILT.

` TRUCK BOLSTBR. APPLICATION FILED JULY 2B. 1902.

N0 MODEL.

WITNESSES:

me Nunms varias co, PHoroLm-ao. wAsmNsm No. 'yemas'.

'Patented July 2s, 190e.

PATENT OFFICE.

CORNELIUS VANDERBILT, OE NEW YORK, N. Y.

TnUoK-BoLsTEu.

I SPECIFICATION fornng part of LettersPatent No. 734,638, dated July 28,1903.

Application filed July 26,1902. Serial No. 117,073. (No modelf;

To a/ZZ' whom it may concern:

Be it known that I, CORNELIUS VANDER- BILT, a resident of the boroughofManhattan, city and State of New York, have invented certain newand`useful Improvements in specification.

Certain features of the inventionherein set Truck-Bolsters, ofwhich the4following is a forth and claimed are broadly claimed in myv application,Serial No. 110,139, filed June 4,

`a side elevation, partly in section, and Fig.

3 an endelevation, of one form of truck-bol ster embodying my invention.Figs. 4 and 5 show, respectively, a plan and a side elevation, thelatter partly in section, of a modified or alternative form oftruck-bolster.

In both of the forms of truck-bolster described in this application andshown in the accompanying drawings the bolster usually consists of asingle casting preferably, though not necessarily, of cast-steel. Thecenter bearing l, side bearings 2 2, and column-` guides 3 3 are allintegral with the body of which in the forms shown comprise top andbottom webs 4 and 5 andfront and rear walls 9 9, thus forming a hollowbeam. The upper and lower webs being con-A also that in both forms ofbolster the depth, as well as the width, of the bolster diminishes fromits center toward its ends. By this construction a bolster is produced4of V.minimum weight, since a large amount of metal is dispensed with,thereby lessening the initial cost, while at the same time a strongbolster i ,continuous at their centers, thus giving the ,bolstergreatest strength at its center, where the stresses are greatest, theparts 1l performing the functions of struts between the upper web 4 andthe lower web 5.

In both forms of truck-bolster herein illustrated the top web 4 and thebottom web 5 unite at both ends to form the webs 6 6.

It will be observed that the point of junction of the webs 4 and 5 isbeyond the side bearing 2-that is to say, at that portion of the bolsterupon which the side'bearings arelocated the top and bottom webs areseparated from each other. This feature gives the bolster much greaterstrength to resist `the stresses transmitted by the side bearings thanwould be the case if the side bearings were located above or beyond theplace of union of the webs 4 and 5, where there is but a single web. Theends 7 7 of the webs 6 6 are turned down, as shown, for the purpose offorming recesses or pockets 8 8, within which the ends of the springsupon which the bolster rests are held against displacement. The frontand rear walls t) 9 are joined at the top and bottom to the upper and'lower Webs 4 and 5, as shown, and preferably extend the entire length ofthe bolster, joining the parts 7 and forming front andrear walls for therecesses 8.l

The central portion of the bolster maybe, and preferably is,strengthened by the vertical partitions 12 and 13, (shown in Figs. 4 and5;) but'these may be omitted,` if desired. 1n case they are used,however, it will be evident that those portions of the side IOO walls 99 which are between the upper and lower webs 4 and 5, asillustrated inthe drawings, may be dispensed with, if desired.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. A truck-bolster, comprising top and bottom webs, which are widest attheir centers and taper toward their ends, said webs being united attheir ends, and separated at their intermediate portions, transversebraces between said intermediate portions, and a longitudinal braceuniting said transverse braces, substantially as described.

2. A truck-bolster having top and bottom webs gradually converginguntilv they unite at their ends, said ends being turned downward,transverse braces between the webs intermediate their united ends, and alongitudinal brace uniting said transverse braces, substantially asdescribed.

3. Atruck-bolster, comprising top, bottom, front and rear walls, andside bearings, said top and bottom walls being united at their beingturned downward, substantially as de-f scribed.

5. A truck-bolster, comprising side bearings with spaced walls, and topand bottom Webs separated at their centers and gradually convergingtoward their ends until they unite, said ends being united beyond saidside bearings, substantially as described.

6. A truck-bolster, comprising side bearings with spaced walls, and topand bottom webs separated at their centers, and gradually convergingtoward their ends until they unite, said ends being united beyond saidside bearings, and the ends of the united portions being turneddownward, substantially as described.

7. A truck-bolsterhaving top, bottom, front and rear walls and sidebearings, said top and bottom walls being united at their ends beyondsaid side bearings to form horizontal webs, the ends of said webs beingturned downward, the said front and rear walls extending from one ofsaid downturned ends to the other -downturned end, substantially asdescribed.

In witness whereof Ihave hereunto signed my name this 21st day ot' July,1902.

CORNELIUS VANDERBILT.

In presence of Louis ASHEPARD, WILLIAM W. CLoUsER.

